<template>
	<div>
		<!-- 面包屑导航区 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
		  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
		  <el-breadcrumb-item>用户管理</el-breadcrumb-item>
		  <el-breadcrumb-item>用户列表</el-breadcrumb-item>
		</el-breadcrumb>
		
		<!-- 卡片视图区域 -->
		<el-card>
			<!-- 搜索条 -->	
			<el-row :gutter="20">
				<el-col :span="9">
					<el-input placeholder="请输入内容" v-model="queryInfo.query"
					clearable
					@clear="getUserList">
					    <el-button slot="append" icon="el-icon-search"
						@click="getUserList"></el-button>
					</el-input>
				</el-col>
				<el-col :span="4">
					<el-button type="primary" 
					@click="addDialogVisible = true">添加用户</el-button>
				</el-col>
			</el-row>
			
			<!-- 用户数据表格区域 -->
			<el-table
			  :data="userlist"
			  border
			  stripe>
			  <el-table-column type="index"></el-table-column>
			  <el-table-column prop="username" label="姓名"></el-table-column>
			  <el-table-column prop="email" label="邮箱"></el-table-column>
			  <el-table-column prop="mobile" label="电话"></el-table-column>
			  <el-table-column prop="role_name" label="角色"></el-table-column>
			  <el-table-column label="状态">
				  <template slot-scope="scope">
					  <el-switch v-model="scope.row.mg_state"
					  @change="userStateChange(scope.row)"></el-switch>
				  </template>
			  </el-table-column>
			  <el-table-column label="操作">
				  <template slot-scope="scope">
					  <!-- 修改按钮 -->
					  <el-button type="primary" icon="el-icon-edit" size="mini"
					  @click="showEditDialog(scope.row.id)"></el-button>
					  <!-- 删除按钮 -->
					  <el-button type="danger" icon="el-icon-delete" size="mini"
					  @click="removeUserById(scope.row.id)"></el-button>
					  <!-- 分配角色按钮 -->
					  <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
					        <el-button type="warning" icon="el-icon-setting" size="mini"
							@click="setRole(scope.row)"></el-button>
					  </el-tooltip>
				  </template> 	
			  </el-table-column>
			</el-table>
			
			<!-- 分页区域 -->
			<el-pagination
			  @size-change="handleSizeChange"
			  @current-change="handleCurrentChange"
			  :current-page="queryInfo.pagenum"
			  :page-sizes="[1, 2, 5, 10]"
			  :page-size="queryInfo.pagesize"
			  layout="total, sizes, prev, pager, next, jumper"
			  :total="total">
			</el-pagination>
		</el-card>
		
		<!-- 添加用户对话框 -->
		<el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%"
		@close="addDialogClosed">
		  <!-- 内容主体区域 -->
		  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" 
		  label-width="70px">
		    <el-form-item label="用户名" prop="username">
		      <el-input v-model="addForm.username"></el-input>
		    </el-form-item>
			<el-form-item label="密码" prop="password">
			  <el-input v-model="addForm.password"></el-input>
			</el-form-item>
			<el-form-item label="邮箱" prop="email">
			  <el-input v-model="addForm.email"></el-input>
			</el-form-item>
			<el-form-item label="手机" prop="mobile">
			  <el-input v-model="addForm.mobile"></el-input>
			</el-form-item>
		  </el-form>
		  <!-- 底部区域 -->
		  <span slot="footer" class="dialog-footer">
		    <el-button @click="addDialogVisible = false">取 消</el-button>
		    <el-button type="primary" @click="addUser">确 定</el-button>
		  </span>
		</el-dialog>
		
		<!-- 修改用户信息的对话框 -->
		<el-dialog title="修改用户信息" :visible.sync="editDialogVisible"
		  width="50%" @close="editDialogClosed">
		  <el-form :model="editForm" :rules="editFormRules" 
		  ref="editFormRef" label-width="70px">
		    <el-form-item label="用户名">
		      <el-input v-model="editForm.username" disabled></el-input>
		    </el-form-item>
			<el-form-item label="邮箱" prop="email">
			  <el-input v-model="editForm.email"></el-input>
			</el-form-item>
			<el-form-item label="手机" prop="mobile">
			  <el-input v-model="editForm.mobile"></el-input>
			</el-form-item>
		  </el-form>
		  <span slot="footer" class="dialog-footer">
		    <el-button @click="editDialogVisible = false">取 消</el-button>
		    <el-button type="primary" @click="editUserInfo">确 定</el-button>
		  </span>
		</el-dialog>
		
		<!-- 分配角色对话框 -->
		<el-dialog
		  title="分配角色" :visible.sync="setRoleDialogVisible" width="50%"
		  @close="setRoleDialogClosed">
		  <div>
			  <p>当前用户：{{userInfo.username}}</p>
			  <p>当前角色：{{userInfo.role_name}}</p>
			  <p>分配新的角色：
				<el-select v-model="selectedRoleId" placeholder="请选择">
				    <el-option
				      v-for="item in rolesList"
				      :key="item.id"
				      :label="item.roleName"
				      :value="item.id">
				    </el-option>
				</el-select>
			  </p>
		  </div>
		  <span slot="footer" class="dialog-footer">
		    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
		    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
		  </span>
		</el-dialog>
		
		
	</div>
</template>

<script>
	export default {
		name: 'Users',
		data(){
			//自定义的校验规则
			//验证邮箱的规则
			var checkEmail = (rule, value, callback) => {
				//验证邮箱的正则表达式
				const regEmail = /^([A-Za-z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
				
				if(regEmail.test(value)){
					return callback()
				}
				
				callback(new Error('请输入合法的邮箱'))
			}
			//验证电话的规则
			var checkMobile = (rule, value, callback) => {
				//验证电话的正则表达式
				const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
				
				if(regMobile.test(value)){
					return callback()
				}
				
				callback(new Error('请输入合法的手机号'))
			}
			return {
				queryInfo: {
					query: '',
					pagenum: 1,  //当前的页码
					pagesize: 2  //当前每页显示多少条数据
				},
				userlist: [],
				total: 0,
				userInfo: {},  //保存当前用户数据，将要分配角色
				rolesList: {},  //保存请求到的所有角色列表数据
				selectedRoleId: '',  //保存选中的角色id值
				addDialogVisible: false,  //控制添加用户对话框的显示与隐藏 
				editDialogVisible: false, //控制修改用户信息对话框的显示与隐藏
				setRoleDialogVisible: false,  //控制分配角色对话框的显示与隐藏
				addForm: {  //添加用户的表单对象
					username: '',
					password: '',
					email: '',	
					mobile: ''				
				},
				editForm: {  //查询到的用户信息对象
					
				},
				addFormRules: {    //表单验证规则对象
					username: [
						{
							required: true,
							message: '请输入用户名',
							trigger: 'blur'
						},
						{
							min: 3,
							max: 10,
							message: '用户名的长度在3~10个字符之间',
							trigger: 'blur'
						}
					],
					password: [
						{
							required: true,
							message: '请输入密码',
							trigger: 'blur'
						},
						{
							min: 6,
							max: 15,
							message: '密码的长度在6~15个字符之间',
							trigger: 'blur'
						}
					],
					email: [
						{
							required: true,
							message: '请输入邮箱',
							trigger: 'blur'
						},
						{
							validator: checkEmail,
							trigger: 'blur'
						}
					],
					mobile: [
						{
							required: true,
							message: '请输入电话',
							trigger: 'blur'
						},
						{
							validator: checkMobile,
							trigger: 'blur'
						}
					]
				},
				//修改用户表单的验证规则
				editFormRules: {
					email: [
						{
							required: true,
							message: '请输入邮箱',
							trigger: 'blur'
						},
						{
							validator: checkEmail,
							trigger: 'blur'
						}
					],
					mobile: [
						{
							required: true,
							message: '请输入电话',
							trigger: 'blur'
						},
						{
							validator: checkMobile,
							trigger: 'blur'
						}
					]
				},
				
			}
		},
		created(){
			this.getUserList()
		},
		methods: {
			async getUserList(){
				const {data:res} = await this.$http.get('users',{
					params: this.queryInfo
				})
				//console.log(res)
				
				if(res.meta.status !== 200){
					return this.$message.error('获取用户数据失败！')
				}
				
				this.userlist = res.data.users
				this.total = res.data.total
			},
			//一页要显示多少条数据
			handleSizeChange(newSize){
				//console.log(newSize)
				this.queryInfo.pagesize = newSize
				this.getUserList()
			},
			//切换到哪一页
			handleCurrentChange(newPage){
				//console.log(newPage)
				this.queryInfo.pagenum = newPage
				this.getUserList()
			},
			//监听用户状态开关的修改
			async userStateChange(userInfo){
				//console.log(userInfo)
				const { data:res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
				if(res.meta.status !== 200){
					userInfo.mg_state = !userInfo.mg_state 
					return this.$message.error('更新用户状态失败！')
				}
				this.$message.success('更新用户状态成功')
			},
			//添加用户对话框的关闭事件的回调函数
			addDialogClosed(){
				this.$refs.addFormRef.resetFields()
			},
			//添加用户对话框的确定按钮的点击事件的回调
			//对整个表单进行预校验
			addUser(){
				this.$refs.addFormRef.validate(async valid => {
					//console.log(valid)
					
					//当表单验证不通过时，直接退出
					if(!valid) return
					
					//当表单验证通过时，发起添加用户的网络请求
					const {data: res} = await this.$http.post('users', this.addForm)
					if(res.meta.status !== 201){
						this.$message.error('添加用户失败！')
					}
					this.$message.success('添加用户成功')
					
					//关闭对话框
					this.addDialogVisible = false
					
					//重新获取用户列表数据
					this.getUserList()
				})
			},
			//修改用户信息 
			async showEditDialog(id){
				this.editDialogVisible = true
				
				//console.log(id)
				
				const {data: res} = await this.$http.get('users/' + id)
			
				if(res.meta.status !== 200){
					return this.$message.error('查询用户信息失败！')
				}
			
				this.editForm = res.data
				//console.log(this.editForm)
			},
			//修改对话框的close事件的回调
			editDialogClosed(){
				this.$refs.editFormRef.resetFields()
			},
			//修改对话框确认按钮的click事件的回调
			editUserInfo(){
				this.$refs.editFormRef.validate(async valid => {
					//console.log(valid)
					
					//表单验证不通过时，直接退出
					if(!valid) return
					
					//表单验证通过时，发起网络请求，让后台进行真正的修改
					const {data: res} = await this.$http.put('users/'+this.editForm.id, {
						email: this.editForm.email,
						mobile: this.editForm.mobile
					})
					
					if(res.meta.status !== 200){
						return this.$message.error('修改用户信息失败！')
					}
					
					//重新请求用户信息，刷新用户信息列表
					this.getUserList()
					//提示修改成功
					this.$message.success('修改用户信息成功')
					
					//关闭对话框
					this.editDialogVisible = false
				})	
			},
			//删除用户
			async removeUserById(id){
				//console.log(id)
				
				//弹框询问是否删除用户数据
				const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
				  confirmButtonText: '确定',
				  cancelButtonText: '取消',
				  type: 'warning'
				}).catch(err => err)
				
				if(confirmResult !== "confirm"){
					return this.$message.info('已取消删除')
				}
				
				//console.log('删除成功')
				//发起网络请求，让后台进行真正的删除
				const {data: res} = await this.$http.delete('users/'+id)
				
				if(res.meta.status !== 200){
					return this.$message.error('删除用户失败！')
				}
				
				this.$message.success('删除用户成功')
				
				//刷新用户列表
				this.getUserList()
			},
			//分配角色按钮click事件的回调
			async setRole(userInfo){
				//将当前用户数据保存到data中
				this.userInfo = userInfo
				
				//发送请求，获取所有角色数据
				const {data: res} = await this.$http.get('roles')
				
				if(res.meta.status !== 200){
					return this.$message.error('获取角色列表失败！')
				}
				
				//将所有角色列表数据保存到data中
				this.rolesList = res.data
				//console.log(this.rolesList)
				
				//显示分配角色对话框
				this.setRoleDialogVisible = true
			},
			//分配角色对话框 确认按钮 click事件的回调函数
			async saveRoleInfo(){
				//判断是否选择了新的角色
				if(!this.selectedRoleId){
					return this.$message.error('请选择要分配的角色')
				}
				
				//发起网络请求
				const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {
					rid: this.selectedRoleId
				})
				
				if(res.meta.status !== 200){
					return this.$message.error('更新角色失败！')
				}
				
				this.$message.success('更新角色成功')
				
				//刷新当前的用户列表
				this.getUserList()
				
				//关闭对话框
				this.setRoleDialogVisible = false
			},
			//分配角色对话框close事件的回调
			setRoleDialogClosed(){
				this.selectedRoleId = ''
				this.userInfo = {}
			},
			
		}
	}
</script>

<style lang="less" scoped="scoped">
	
</style>
